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一九七二年以来,我们对北纬34°以北,东经123°以西至山东、江苏近岸5米等深线范围内,面积约8万平方公里的海域,进行了海洋地质综合调查。通过对1300多个沉积物样品的矿物镜下鉴定,发现海区矿物多达50余种,其中自生矿物就占有10多种。在自生矿物中,以自生黄铁矿最具有代表性。本文仅对南黄海西北部沉积物中自生黄铁矿的矿物特征、分布规律、沉积环境和成因作一初步探讨。
Since 1972, we conducted a comprehensive survey of marine geology in a sea area of about 80,000 square kilometers within a 5-meter contour line such as north of 34 ° north latitude, west longitude of 123 ° east to Shandong and Jiangsu nearshore. According to the mineral microscopic identification of more than 1300 sediment samples, it is found that there are more than 50 kinds of minerals in the sea area, of which more than 10 kinds of authigenic minerals occupy. Among the self-generating minerals, the most representative is the authigenic pyrite. This paper only discusses the mineralogical characteristics, distribution, depositional environment and genesis of authigenic pyrite in the sediments of the northwestern South Yellow Sea.